Franz merrem



(No Model.)

F. MERREM.

SIGHT FOR FIREARMS.

No. 582,660. Patented May 18, 1897.

UNITED STATES PATENT OFFICE.

FRANZ MERREM, OF IAIOMBURG, GERMANY.

SIGHT FOR FIREARIVIS.

` SPECIFICATION forming part of Letters Patent No. 582,660, dated May18, 1897.

Application filed December 6,1895l Serial No. 571,228. (No model.)Patented in England-'November 15, 1895,No. 21,745; in Belgium November16,1895, No.118,496; in France November 16, 1895, No. 251,756; inSwitzerland December 20,1895, No. 11,656; in Italy December 30, 1895,LXXIX, 291; in Austria January 24, 1896, No. L16/291, and in GermanyApril 25,1896, No. 86,516, and June 8,1896, No.87,117.

T all whom, it 11i/ay con/061%:

Be it known that I, FRANZ MEEEEM, Royal Ranger at Homburg-vor-der-I-Ihe,Germany, have invented new and useful Improvements in Sights forFirearms, (for which'I have obtained foreign Letters Patent as follows:In England, No. 21,7415, dated November 15, 1895; in Belgium, No.118,496, dated November 16, 1895; in France, No. 251,756, dated November16, 1895; in Switzerland,No.11,653, dated December 20, 1895 inItaly,No.LXXIX, 291, dated December 30, 1895; in Austria, No. 16/291,dated January 24 1896, and in Germany, No. 86,516, dated April 25, 1896,and No. 87,117, dated June 8, 1896,) of which the following is aspecification.

The object of my invention is to improve the front and eventually theback sights of firearms of the character having two surfaces which maybe alternately used when aiming at light or dark objects or when used inweak or strong daylight. For this purpose one of the two surfaces islight and the other dark, and more especially I use for the lightsurface an inclined plane of light color showing upward and therebyreceiving more light than a vertical one, and for the dark surface aninclined black plane showing downward in order to keep it from directlight in perpetual shade. Both surfaces are so arranged on the sightthat either may be presented to the eye of the marksman.

In the accompanying drawings I have shown how my invention is carriedout in a front sight and a back sight.

Figures 1 and 2 are elevations of a front sight in two differentpositions, the bed-plate in section. Fig. 3 is a plan View. Figs. 4 and5 are two elevations of a back sight. Fig. 6 is a plan view.

The front sight consists of a rhomboid block A, which is covered by anivory plate or one of mother-of-pearl, silver, or the like a at itslight oblique surface, while the dull one is blackened. The block A ismounted by a pin Bin the bed-plate C and kept in position by a flatforked spring D, pressing downward against the head of the pin B. Thebottom of the block A rests in a shallow embasement in the bed-plate andmay be turned, lifting it by two fingers.

The back sight (shown in Figs. 4 to 6) consists of a prism G oftriangular section and rotatably fixed on an anis g.

The light surface which is used in combination with the black one of thefront sight, has preferably only a light band at the upper edge, formedby the section of the plate g2 and preferably of the same breadth as thedepth of the notch g3 cut in the edge.

A triangle g4 may be provided, as usual, marking by its point the lowestpoint of the notch g3.

Now what I claim, and desire to secure by Letters Patent, is thefollowing:

1. A movable sight for firearms having two inclined planes one of whichis dark, showing downward, and the other light, showing upward,substantially as set forth and means for holding the sight with eitherof said planes forward.

2. A sight for firearms having two parallelV inclined planes one ofwhich is light and the other dark, in combination with a bed-plate, apin adapted to rotate in said bed-plate and a spring bearing against thehead of said pin, substantially as set forth.

3. In a sight for firearms, the combination with a rhomboid block lighton one surface and dark on the other and adapted to be turned to bringthe light or the dark surface toward the marksman at will, of abed-plate having a shallow embasement, a pin upon which said block ismounted and a iiat forked spring adapted to press against the head ofsaid pin, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FRANZ MERREM.

Witnesses RICHARD Win'rn, OAEL ROTH.

